Whenever I try to open a saved mod, it loads however there is no data and the render window and cell window is empty. However the data is there because I click on details and all the objects are there.

You need to load both the master file (Skyrim.esm and evt. any DLCs you use) and your saved mod at the same time if you haven't already. Tick "Active" on the mod you want to load.

If that's not the problem it's maybe because you have written something in the Filter in the upper left corner of the object window / cell window.

No I have loaded the master file and there is nothing in the filter but thanks for the suggestion.

The render window is normally empty until you select a cell, and the default cell list is interiors, but that might be different if you added your own worldspace. Is the drop-down over the cell view to select a different worldspace populated?

Ah yes thank you I had made multiple copies of the cell and I just found the right one now thank you again